The UN IWG on Cyber Security and OTA issues held its 39th session on 3 September 2026. The provisional agenda (TFCS-38-01/Rev.3) and minutes from the 38th session (TFCS-38-13) were adopted. Regarding R155 amendments: multistage vehicle proposals (GRVA/2026/28, GRVA/2026/29, TFCS-39-08) will be submitted as informal documents with a merged paragraph; component approval proposals (TFCS-39-04) had STU references removed and discussion continues; remote operation for ADS proposals were not discussed but participants are invited to consider a general refresh of Annex 5. RXWIN application proposals (TFCS-39-05, TFCS-39-06, TFCS-39-07, TFCS-39-08, TFCS-39-09, TFCS-39-10, TFCS-39-11, TFCS-39-12) were presented; items 1, 4, and 6 were agreed, item 5 was agreed in principle, and items 2 and 3 regarding R155 and R157 applicability require revised wording. Netherlands expressed concerns about vehicle discontinuation and multiple type approvals. Administrative provisions regarding Type Approval Authority for CSMS/SUMS (GRVA/2026/30, TFCS-39-02, TFCS-39-07) were discussed without consensus. Out-of-scope vehicle approvals (TFCS-38-03) discussion was deferred to a separate workshop. Two informal documents will be provided to GRVA.

Proposal to insert new paras. 27 and 28 in Part C Guidance for the application of UN Regulation No. 155 to transformed vehicles. Para. 27 states the requirement that the Certificate of Compliance and type approval are issued by the same Approval Authority applies only within the scope of the type approval granted to the manufacturer concerned. Para. 28 states where a vehicle manufacturer modifies a vehicle with existing type approval and applies for new type approval covering the modification, they need not use the same type approval authority as was used by the original vehicle manufacturer.

Proposal to amend para. 7.2.1.2.2. to delete, in cases where RXSWINs are not held on the vehicle, the requirement that the manufacturer shall declare the software version(s) of the vehicle or single ECUs with the connection to the relevant type approvals to the Approval Authority and that this declaration shall be updated each time the declared software version(s) is updated, and add that the link between the software version(s) and the RXSWINs shall be declared.